Key guide



FIG. 1 is a top and front perspective view of a key guide showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a top and side perspective view thereof, the broken-line disclosure of a key being for illustrative purposes only and forming no part of the claimed design;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a vertical cross-sectional view thereof, taken along line 6-6 of FIG. 4; and

FIG. 7 is a vertical cross-sectional view thereof, taken along line 7--7 of FIG. 6. 

The ornamental design for a key guide, as shown and described. 